It's hard to tell in the first error screenshot what is wrong because it's so dark, but the second image looks like the object is gone.
Did you save the object in a different group? And I am talking like, ya know you don't save it in the FH default object groups or anything, but also the custom groups. For example: I have a group called Stuff, and I place a bunch of objects in there but one doesn't work. So I make another group called Stuff2 and save it in there and delete it from the older folder, then it shows up. This is what I had to do so that may be the problem.